Properties of Obsidian lan Comendite
ukuran gandum
ora ditrapake
grained medium
rengat
conchoidal
mrembet
porosity
banget kurang keropos
Highly keropos
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
2
tartamtu gravitasi
2.6-2.7
2.38
Kapadhetan
2.6 g / cm 3
ora Sumadhiya
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas, impact tahan